EP1153163B1 - Waschmaschine mit auswuchtvorrichtung - Google Patents

Waschmaschine mit auswuchtvorrichtung Download PDF

Info

Publication number
EP1153163B1
EP1153163B1 EP99962598A EP99962598A EP1153163B1 EP 1153163 B1 EP1153163 B1 EP 1153163B1 EP 99962598 A EP99962598 A EP 99962598A EP 99962598 A EP99962598 A EP 99962598A EP 1153163 B1 EP1153163 B1 EP 1153163B1
Authority
EP
European Patent Office
Prior art keywords
drum
imbalance
load
masses
sensing means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99962598A
Other languages
English (en)
French (fr)
Other versions
EP1153163A1 (de
EP1153163A4 (de
Inventor
Gregory Raymond Collecutt
David Charles Rhodes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisher and Paykel Appliances Ltd
Original Assignee
Fisher and Paykel Appliances Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fisher and Paykel Appliances Ltd filed Critical Fisher and Paykel Appliances Ltd
Priority to EP06026323A priority Critical patent/EP1764436A1/de
Publication of EP1153163A1 publication Critical patent/EP1153163A1/de
Publication of EP1153163A4 publication Critical patent/EP1153163A4/de
Application granted granted Critical
Publication of EP1153163B1 publication Critical patent/EP1153163B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/125—Supporting arrangements for the casing, e.g. rollers or legs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/54—Changing between normal operation mode and special operation modes, e.g. service mode, component cleaning mode or stand-by mode
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
    • D06F37/245—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • This invention relates to a system for balancing the load in a laundry appliance, particularly but not solely, a system for balancing the load in a horizontal axis washing machine.
  • the ideal approach is to eliminate the problem at its source, for which there are various solutions.
  • the first possibility is to ensure that the wash load is evenly distributed prior to spinning. This is an effective solution but it is extremely difficult to achieve in practice. Therefore while steps can be taken to reduce the degree of imbalance that must be catered for, it is not possible to eliminate it sufficiently to ignore it there after.
  • Another approach is to determine the size and nature of the imbalance, and add an imbalance that exactly counteracts the first.
  • Each of US Patent 2,610,523 and British Patent 711531 describe automated balancing systems for hydro-extractors.
  • two or more receptacles are provided for receiving added balancing mass.
  • the balancing mass is in the form of water supplied to the receptacles by injectors or conduits in the drum structure.
  • the receptacles are provided as elongate chambers aligned with the axis of the drum.
  • An electromechanical system activates valves supplying water to the receptacles in a trial and error process to improve balance.
  • the present invention consists in a laundry appliance having a cabinet, a perforated drum for holding a clothes load, the drum being supported in the cabinet for rotation about a spin axis with the spin axis substantially rigidly located in relation to said cabinet, driving means adapted to rotate said drum about its spin axis thereby dehydrating the load, and a system for compensating for imbalances caused by the distribution of the load carried therein during dehydration of the load, said system comprising:
  • the present invention provides a novel method of balancing the load in a laundry appliance, particularly suited to washing machines. Such a system dispenses with the need for suspension, and this significantly simplifies the machine design.
  • the following description is with reference to a horizontal axis machine. However it will be appreciated that the present invention will be applicable to off horizontal and vertical machines, as well as rotating laundry appliances in general.
  • FIGS 3 and 4 show a washing machine of the horizontal axis type, having a perforated drum 11 supported with its axis substantially horizontal in side-to-side orientation within a cabinet 12.
  • the cabinet 12 includes surfaces which confine wash or rinse liquid leaving the drum within a water tight enclosure. Some parts of the cabinet structure 12 may be formed together with the liquid confining surfaces by for example twin-sheet thermoforming. In particular the back and side walls of the machine may be formed in this way.
  • the laundry handling system including the drum and many other components is preferably contained in a top loading configuration.
  • the horizontal axis spin drum 11 is contained within a substantially rectangular cabinet 12 with access being provided via a hinged lid 14 on the top of the machine.
  • Other horizontal axis configurations may be adopted.
  • the drum 11 is rotatably supported by bearings 15 at either end which in turn are each supported by a drum support 16.
  • the bearings are axially located, externally, on a shaft means 19 protruding from the hub area 20 of the drum ends 21,22.
  • Other axial configurations are equally possible, for example internally located in a well in the outer face of the hub area of the drum to be located on a shaft protruding from the drum support.
  • the drum supports 16 are shown each as a base supported unit and have integrated form, which again is ideally suited to manufacture by twin sheet thermoforming, blow moulding or the like.
  • Each drum support preferably includes a strengthening rib area 23 and a drum accommodating well area 25 as depicted to accommodate the respective drum end 21, 22 of the drum 1.
  • the drum supports 16 engage with sub-structure by interlocking within complementary surfaces provided in side walls 27,28. Other less preferable constructions are possible, such as frameworks formed from individual members or mechanical suspension systems.
  • the drum supports 16 each include a bearing support well at the centre of said well area 25.
  • a bearing mount 29 is located within the bearing support well, and in turn the bearing 15 fits within a boss in the bearing mount 29.
  • the drum 11 comprises a perforated metal hoop 30, a pair of ends 21, 22 enclosing the ends of the hoop 30 to form a substantially cylindrical chamber and a pair of vanes 31 extending between the drum ends 21, 22.
  • the drum is driven only from one end 21 and consequently one purpose of the vanes 31 is to transmit rotational torque to the nondriven drum end 22.
  • the vanes also provide longitudinal rigidity to the drum assembly 11.
  • the vanes 31 are wide and shallow, although they have sufficient depth and internal reinforcing to achieve any required resistance to buckling due to unbalanced dynamic loads.
  • the vanes 31 have a distinct form, including a leading and trailing edge to assist in tumbling the washing load.
  • the vanes 31 are oriented oppositely in a rotational direction, so that under rotation in either direction one vane is going forwards and the other backwards. This vane configuration provides further benefits in providing a user friendly opening into the washing chamber as is described below.
  • the drum 11 is supported between a pair of drum supports 16 one at either end thereof.
  • Access to the interior of the drum 11 is provided through a slide away hatch section 33 in the cylindrical wall 30 of the drum.
  • the hatch section is connected through a latching mechanism 34, 35, 36, 37, 38 such that it is connected in a continuous loop during operation.
  • the cabinet 12 of the washing machine is formed to provide access to the drum 11 in a substantially top loading fashion, rather than the traditional front loading fashion more common to horizontal axis machines.
  • the washing machine includes an electric motor (rotor 39 and stator 40 visible in Figure 4) to effect rotation of the drum during all phases of operation (wash, rinse and spin dry).
  • the motor is a direct drive inside-out electronically commutated brushless dc motor having a permanent magnet rotor 39 coupled to one end 21 of the drum 11 and stator 40 coupled to the drum support 16.
  • a suitable form of motor is described in EF0361775.
  • a user interface 24 is provided, allowing user control over the functions and operation of the Machine.
  • the control electronics are integrally contained within the interface module, and provide electronic control over the operation of the machine.
  • a dynamically controlled balancing system uses electrical signals generated by the deformation of load cells in the bearing mounts 29 at each end of the shaft 19 to assess the required weight distribution correction that is required to dynamically rebalance the drum 11.
  • Each bearing mount 29 is formed with a pair of bending bridges 140,41 and mounted on each bending bridge is a load cell 42 as shown in Figure 5.
  • the outputs of the load cells 42 are fed to control processor of the laundry machine to effect the balancing task, which is achieved by the addition of water to one or more of the six balancing chambers 43,46,47,80,81,82 located in the drum, as shown in Figure 6.
  • the output from the load cells 42 is first passed through filtering 50 before connection To the inputs of a microprocessor 51, which may be task specific or the main control processor for the laundry machine.
  • the various algorithms (detailed later) programmed into the microprocessor 51 will dictate spin commands (eg: speed up/slow down) to the motor controller 52 and balancing corrections (eg: open/close valve 54) to the valve driver 53.
  • the motor controller 52 in turn, will vary its energisation of the motor windings to achieve the spin command.
  • the valve driver 53 will open or close the appropriate balancing valve 54, which allows water to flow through the injector 44 into the relevant slot 45 whereupon it is channelled to the appropriate chamber.
  • the valve driver 53 also allows switching between coarse and fine control modes by switching the water flow through the high 55 and low 56 flow rate valves respectively.
  • Pieces of information are typically obtained by measuring either acceleration, velocity, force, or displacement at two independent locations on the vibrating system.
  • the reason that only two sensor locations are required and not four is that because the relevant signals are sinusoidal in time and therefore contain two pieces of information.
  • One is the magnitude of the signal, and the other is the "phase" angle with respect to some reference point on the spinning system.
  • the technique for acquiring data on the imbalance is difficult to implement in practice. This is because some types of signal are more difficult to measure than others, and even if good signals are obtained, the response matrix can become a unpredictable and difficult thing to know (or learn) depending where the signals are measured.
  • the imbalance is characterised using force or stress measurement. Of the available alternatives force is easy to measure and the signal level is quite adequate at low speeds.
  • the desirable signals for the purpose of balancing are a radial component of force at each bearing assembly supporting the drum, and thus two load cells of some sort are required.
  • a pair of sensors 42 are located at either end of the shaft 19 as shown in Figure 4.
  • a strain sensor suited to this application is the piezo disc. This type of sensor produces a large signal output and so is not significantly affected by RFL However a piezo strain sensor can only measure fluctuations in load due to charge leakage across the disc.
  • the piezo disc will have a particular response in relation to applied force. Since force is proportional to frequency squared and the response magnitude is proportional to force frequency, the relationship between sensor output and rpm of the drum is cubic.
  • the bearing mount looks like two concentric cylindrical rings 146, 147 as illustrated in Figure 5.
  • the load bridges 140, 41 described previously are connected at the top and bottom of the inner ring 147, respectively, and to opposite parts of the upper periphery of the outer ring 146.
  • a piezo disc 42 is adhered to the loading bridge onto the side facing the outer ring.
  • the load from the drum is taken through a bearing 15 mounted in the internal ring 147, through the load bridges 48 and load cell 42 into the outer ring 146, and out into the external structure. It will be appreciated that in this fashion the load bridges will flex according to any vertical forces from the spinning of the drum, thus deforming the piezo disc and providing a signal representative of the imbalance force.
  • a dynamic control method is used. This is not in any way to be confused with static and dynamic imbalance as explained earlier, it simply refers to the nature of the control methodology.
  • the alternative control methodology is 'static'.
  • a static control method does not make use of or retain data on the time dependent behaviour of its target system. As a result the method is executed as a 'single shot' attempt to restore equilibrium, and sufficient time must be allowed to lapse after each execution so that the system has returned to a steady state condition prior to the next execution.
  • a dynamic control method can anticipate the time dependent behaviour of the system and by storing recent past actions it is able to continuously correct the system, even while the system is in transient response.
  • the main advantage of the preferred dynamic control is that the control loop is able to adjust for discrepancies as and when they appear rather than having to wait for the next execution time to come round. For systems with slow time response this is a considerable advantage.
  • the controller must be programmed with an estimate of the time dependent response of the target system. However, provided it has no significant quirks, this only needs to be roughly approximated and the approach will still work well. Also, because the dynamic controller runs on a fast decision loop, any noise on the input parameters will result in many small corrections being made that are completely unnecessary. For this reason a minimum threshold correction level must be established where there is any cost or difficulty associated with effecting a correction.
  • the present controller must be programmed with an approximation of the time dependent behaviour of the machine. More precisely it must know how much to weight its past actions (as a function of how long ago they were made) when deciding on what corrections, if any, are to be implemented.
  • the sum of the appropriately weighted past history of water addition can be considered to be 'Effect in Waiting'; i.e. the controller is still anticipating that the effect of a certain quantity is still to come through on the signals, and thus must subtract this 'Effect in Waiting' from the presently calculated water requirements when deciding which valves should be on and which should be off at present.
  • the balance controller must not address two chambers at once at one end unless it is clear that neither of them could be due to noise, i.e. both of them require a similar amount of water.
  • the ends of the machine are not truly independent systems but are weakly coupled (as will be discussed later) then large out of balance forces at one end cause 'ghost images' at the other, thus the balance controller must not address two ends at the same time unless it is clear that neither of them could be ghost images, i.e. both ends require a similar amount of water.
  • the easiest way to address both of these problems is identify the maximum water requirement out of the six chambers and to then set a dynamic 'noise' threshold equal to half of this value of water (as shown in Figure 10).
  • a water valve (e.g. 5) is then only turned on if the result 72 of its present requirements 70, minus its present effect in waiting 71, minus the noise value, is greater than the increment value mentioned above. It is here that we perform our magnitude calibration by adjusting this increment value.
  • a small amount of hysteresis is necessary to prevent repetitive short valve actuations. This is simply achieved by using the above criterion for deciding when to turn a valve on, but using a different criterion when deciding when to turn it off again.
  • the off criterion is more simple: a water valve is only turned off once its present requirements is less than its present effect in waiting. In other words once the valve is on it is not turned off until its chamber requirements are addressed.
  • the task of spinning while balancing actively can be subdivided into three sub-tasks or algorithms: Imbalance Detection Algorithm (IDA) Balance Correction Algorithm (BCA) Spin Algorithm (SA)
  • IDA Imbalance Detection Algorithm
  • BCA Balance Correction Algorithm
  • SA Spin Algorithm
  • the Imbalance Detection Algorithm (IDA) (shown in Figure 11) is concerned solely with the acquisition of imbalance related data, and is embedded in the motor control routine. It is active whenever the motor is turning, and makes its results available for the Balance Correction Algorithm (BCA) to see.
  • IDA Imbalance Detection Algorithm
  • the Spin Algorithm (shown in Figure 13) is concerned solely with executing the spin profile asked of it. It ramps the speed of the machine according to the profile requested and the vibration level determined by IDA.
  • BCA (shown in Figure 12) is concerned solely with correcting whatever imbalance IDA has determined is there. It is an advanced control algorithm that takes into account the time dependent behaviour of both the machine and IDA. BCA is active whenever the rotation speed of the machine is greater than approximately 150 rpm.
  • the discrete Fourier analysis may be made considerably more simple if the sampling is performed using a fixed number of samples per revolution rather than a fixed frequency.
  • This requires a rotary encoder, which in this application is already provided in the form of a DC Brush-less motor. It is therefore necessary to use a number of points per revolution that divides exactly into the number of commutations per revolution executed by the motor.
  • This also enables the sine values that will be required to be pre-programmed as a table (termed the 'sine table'), from which the cosine values may be obtained by offsetting forwards by a quarter of the number of samples per period.
  • the forgetting factor used was 0.3 since 0.3 of the old average is forgotten and replaced it with 0.3 of the new measurement.
  • This form of averaging suits microprocessor based application since it is inexpensive with respect to both memory space and processor time.
  • the balancing can only be executed over many iterations (due to water extraction from the load) it is not necessary to be able to obtain a perfect balance in one 'hit'. From this point of view it is then acceptable to make a few 'approximations', the biggest of which is to treat the machine as two independent single degree of freedom (SDOF) systems associated with each signal source.
  • SDOF single degree of freedom
  • the way to implement this is very simple.
  • the Fourier technique uses sine and cosine wave forms to extract the orthogonal x and y projections. This follows quite naturally from the fact that a cosine wave is a sine wave that is has been shifted to the left by 90 degrees. Therefore to split the signal vectors into projections that are 120 degrees apart simply requires to replace the cosine wave form with a sine wave form that has been shifted to the left by 120 degrees, i.e. one third of a rotation.
  • the phase calibrated signals now represent the projection of the imbalance onto the first two chambers.
  • To obtain the projection of the imbalance onto the third chamber to we may use the vector identity that the sum of three vectors of equal magnitude and all spaced 120 degrees apart must be equal to zero. Hence the sum of all three projections must be zero, i.e. the projection onto the third chamber is the negative of the sum of the projections onto the first two chambers.
  • the three values obtained are made to represent the projection of the restoring water balance required onto each balancing chamber.
  • the overall control over the spin process is assigned to the spin algorithm SA. It begins with the bowl speed at zero, and disables the BCA. Its first task is to better distribute the wash load to allow spinning to begin. If at a very low spin speed the vibration is below the initial threshold, it is allowed to spin to the minimum BCA speed at which point BCA is enabled. If the vibration is not below the threshold, redistribution is retried a number of times before stopping and displaying an error message. Once BCA has attained the target level of spin speed the spin is allowed to continue for the desired period after which the bowl is stopped, valves are closed and BCA is disabled.
  • the balance correction algorithm shown in Figure 12 begins with calibration of the phase information from the IDA.
  • the step of vector rotation is optional depending on the method used (alternative is to apply in offset to the sine table). Following this the vectors are normalised and the level of vibration is calculated. If the enable flag is true and the level of vibration is below a predefined critical limit the decision making process begins. Firstly the vibration level is compared to a number of threshold values to assess whether to enable increase of the bowl speed. Then depending on the level of vibration fine or coarse (low or high flow rate to valves) correction is enabled. The effect in waiting of past actions is then updated, and together with the current vector information and the status of each valve a decision is made whether to open or close each valve.
  • the hold bowl speed flat is not enabled i.e. acceleration is allowed, and the speed is not currently at the desired target level, the bowl speed is allowed to increase to the target level. At this point it loops to the start and begins another iteration, effectively continuously correcting and accelerating until it reaches the target speed.
  • the washing machine is assumed to be supported on a rigid surface such as a concrete floor. Where this is not the case, for example, wooden floors, and the entire washing machine is permitted substantial displacement during the spin cycle, then those techniques previously described will not be entirely successful. Therefore, in a further improvement the present invention also provides a method and apparatus for correcting for spin imbalances when the washing machine is supported on a non-rigid support surface.
  • the equivalent spring system which represents the spin drum 100, the machine frame 102 and the reference surface is shown in Figure 14.
  • the first spring 106 between the spring drum 100 and the machine frame 102 effectively represents the elasticity of the load bridge which connects the bearing mount to the drum support or frame of the washing machine.
  • This bridge also forms the basis of the load cell which measures the forces between the drum and the frame of the washing machine.
  • the second spring component 108 in this case represents the elasticity of the support surface, for example, flexible wooden floorboards.
  • the second spring 108 is complex and includes a damping component 110.
  • a accelerometer 112 is connected either to a non-rotating part of the bearing itself or on an adjacent section of the load cell bridge.
  • F 1 is the force vector measured at one end 1 of the machine
  • F O/B1 and F O/B2 are the F O/B vectors at ends 1 and 2 respectively
  • R 11 and R 12 are the individual response factors that F O/B1 and F O/B2 have at end 1. (Note that R 11 and R 12 are also vectors; each consisting of magnitude, and phase lag of the response)
  • F 2 is now the force vector as measured at end 2 and R 21 and R 22 are the individual response factors that F O/B1 and F O/B2 have at end 2.
  • F O/B is the column vector (of vectors) F O / B ⁇ 1 F O / B ⁇ 2
  • R is the response matrix (of vectors) R 11 R 12 R 21 R 22
  • the first technique is very robust, but requires the addition of acceleration sensors to measure absolute vertical acceleration of the drum.
  • the second technique is very clever, but has several difficulties associated with it which are outlined further on.
  • F 1 would be available from IDA as previously described
  • the output of the accelerometer would need to be put through a similar filtering process to the IDA, in order to provide a useful signal.
  • the drum mass m 1 is estimated based on the known weight of the drum, the amount of water added to the load and known characteristics of the load based on the "type" of load.
  • the "type" of load may be determined using any one of a number of well known fabric sensing techniques such as that disclosed in our US patent 4857814 .
  • dF and dF O/B are still 2*1 column vectors, and R is the 2*2 response matrix.
  • dF represents the change in the force vectors as a result of adding F O/B vectors dF O/B .
  • inv R * dF inv R * R * dF O / B

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Centrifugal Separators (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (14)

  1. Waschmaschine mit einem Gehäuse (12), einer perforierten Trommel (11) zum Aufnehmen einer Wäscheladung, wobei die Trommel im Gehäuse drehbar um eine Drehachse gelagert ist und die Drehachse im Wesentlichen starr bezüglich des Gehäuses angeordnet ist, einem Antriebsmittel, das dafür ausgelegt ist, die Trommel um deren Drehachse zu drehen, um somit die Ladung zu entwässern, und einem System zum Kompensieren einer Unwucht, die durch die Verteilung der darin enthaltenen Ladung während der Entwässerung der Ladung hervorgerufen wird, wobei das System umfasst:
    ein Paar Erfassungsmittel (42), die längs der Trommeldrehachse getrennt angeordnet sind, um eine Rotationsunwucht der Ladung zu erfassen, wobei jedes Erfassungsmittel ein Ausgangssignal bereitstellt, das dessen erfasste Unwucht repräsentiert,
    einen Digitalprozessor (51) der die Ausgangssignale von dem Paar Erfassungsmittel (42) empfängt und so programmiert ist, dass er die Größe und die Position einer oder mehrerer Massen berechnet, die zur Trommel hinzugefügt werden müssen, um die erfasste Rotationsunwucht zu korrigieren, und
    Korrekturmittel, die dafür ausgelegt sind, zwei oder mehr Massen zur Trommel hinzufügen, wobei im Gebrauch wenigstens eine der Massen vom Rest der Massen axial beabstandet ist, und wobei eine Zeitverzögerung zwischen dem Korrekturmittel, das das Hinzufügen der Masse beginnt, und der Wirkung dieser Massenhinzufügung, die von einem oder beiden Erfassungsmitteln registriert wird, besteht,
    wobei das System dadurch gekennzeichnet ist, dass
    der Prozessor (51) dann, wenn er die Größe und die Position einer oder mehrerer Massen berechnet, um die Unwucht zu irgendeinem bestimmten Anlass zu beseitigen, den berechneten Wert reduziert, um die vorausgesagte Wirkung einer oder mehrerer Massen zu berücksichtigen, die durch das Korrekturmittel zu einem oder mehreren vorangehenden Anlässen hinzugefügt worden sind, wobei die vollständige Wirkung der vorher hinzugefügten einen oder mehreren Massen durch die Erfassungsmittel noch nicht registriert worden sind.
  2. Waschmaschine nach Anspruch 1, wobei der Prozessor die bekannte Wirkung einer oder mehrerer Massen berücksichtigt, die bei einem oder mehreren vorangehenden Anlässen hinzugefügt worden sind, indem er vom Wert einer oder mehrerer Massen, der auf der Grundlage eines aktuellen Sensorausgangssignals berechnet worden ist, eine Größe subtrahiert, die gleich der Summe der Werte einer Anzahl von vorher berechneten Massen auf der Grundlage des gleichen Sensorausgangssignals ist, wobei die Werte der vorher berechneten Massen gewichtet werden, so dass die zuletzt berechneten Massen eine größere Auswirkung auf die Summe haben.
  3. Waschmaschinen nach Anspruch 1,
    dadurch gekennzeichnet, dass der Prozessor mit einer Software programmiert ist, die den Prozessor veranlasst, die Schritte auszuführen:
    i) Ansteuern des Antriebsmittels, um die Trommel mit einer anfänglichen niedrigen Geschwindigkeit zu drehen,
    ii) Überwachen der Rotationsunwucht auf der Grundlage der Ausgangssignale des Paares von Erfassungsmitteln, um eine anfängliche erfasste Unwucht zu bestimmen;
    iii) Ansteuern des Antriebsmittels, um die Trommel zu drehen und die Ladung innerhalb der Trommel umzuverteilen, wenn die anfängliche erfasste Unwucht nicht unterhalb einer anfänglichen vorgegebenen Schwelle liegt;
    iv) wenn die anfängliche erfasste Unwucht unterhalb der anfänglichen vorgegebenen Schwelle liegt,
    a) Ansteuern des Antriebmittels, um die Drehzahl der Trommel zu erhöhen,
    b) Überwachen der Rotationsunwucht auf der Grundlage der Ausgangssignale des Paares der Erfassungsmittel,
    c) Bestimmen der Größe und der Position einer oder mehrerer Massen, die der Trommel hinzugefügt werden müssen, um die erfasste Unwucht zu korrigieren, unter Verwendung des Digitalprozessors;
    d) Veranlassen des Korrekturmittels, ein oder mehrere Massen hinzuzufügen, um die Unwucht zu korrigieren; und
    e) Ansteuern des Antriebsmittels, um die Trommel mit einer höheren Drehzahl zu drehen und somit die Ladung effektiv zu entwässern.
  4. Waschmaschine nach Anspruch 3, wobei die Unterschritte (a) bis (e) des Schritts (iv) in einer Schleife wiederholt werden, und wobei dann, wenn die erfasste Rotationsunwucht einen vorgegebenen oberen Schwellenwert überschreitet, die Drehzahl der Trommel (11) im Schritt (e) nur dann erhöht wird, wenn die erfasste Rotationsunwucht unter einen vorgegebenen niedrigeren Schwellenwert fällt.
  5. Waschmaschine nach irgendeinem der Ansprüche 1 bis 4, wobei das Korrekturmittel zwei Sätze von in Umfangsrichtung beabstandeten Kammern enthält, wobei die jeweiligen Sätze an jeweiligen Enden der Trommel (11) und in einer orthogonalen Ebene zur Drehachse vorgesehen sind, sowie Mittel zum Einleiten von Wasser in ausgewählte Kammern unter der Steuerung des Prozessors (51).
  6. Waschmaschine nach Anspruch 5, wobei ein Erfassungsmittel (42) und ein Satz von Kammern an jedem Ende der Trommelachse vorgesehen sind.
  7. Waschmaschine nach Anspruch 5 oder Anspruch 6, wobei das Mittel zum Einleiten von Wasser in ausgewählte Kammern Ventile sowohl mit hoher Durchflussrate als auch mit niedriger Durchflussrate (55, 56) enthält, wobei auf der Grundlage der erfassten Unwucht entweder das Ventil mit hoher Durchflussrate oder dasjenige mit niedriger Durchflussrate ausgewählt wird.
  8. Waschmaschine nach irgendeinem der Ansprüche 1 bis 7, ferner umfassend:
    ein Tiefpassfilter (50) zum Filtern des Ausgangssignals jedes Erfassungsmittels und Bereitstellen eines tiefpassgefilterten Unwuchtausgangssignals für den Prozessor; und
    Positionsmittel zum Erfassen des Drehwinkels der Trommel relativ zu einer vorgegebenen Referenz;
    wobei die in den Prozessor programmierte Software die folgenden Schritte für jedes gefilterte Unwuchtausgangssignal ausführt:
    i) Multiplizieren des Wertes des tiefpassgefilterten Ausgangssignals an vorgegebenen Drehwinkeln der Trommel mit einem Wert entsprechend dem Cosinus des erfassten relativen Winkels der Trommel, was zu einer ersten Reihe von Produkten führt;
    ii) Multiplizieren des Wertes des tiefpassgefilterten Ausgangssignals an vorgegebenen Drehwinkeln der Trommel mit einem Wert entsprechend dem Sinus des erfassten relativen Winkels der Trommel, was zu einer zweiten Reihe von Produkten führt;
    iii) Addieren der Werte der ersten Reihe von Produkten bei jedem der vorgegebenen Drehwinkel über eine volle Rotation der Trommel und Dividieren der Summe durch die Anzahl der Werte in den Reihen, um ein erstes Ergebnis zu erzeugen;
    iv) Addieren der Werte der zweiten Reihe von Produkten bei jedem der vorgegebenen Drehwinkel über eine volle Rotation der Trommel und Dividieren der Summe durch die Anzahl der Werte in den Reihen, um ein zweites Ergebnis zu erzeugen;
    v) Bestimmen einer komplexen Zahl, die zusammengesetzt ist aus dem ersten Ergebnis als reale Komponente und dem zweiten Ergebnis als imaginäre Komponente, als eine fundamentale Komponente des Unwuchtsignals für dieses Erfassungsmittel; und
    vi) Berechnen der Größe und der Position einer oder mehrerer Massen für jedes Erfassungsmittel, die erforderlich sind, um die Unwucht zu beseitigen, auf der Grundlage der bestimmten komplexen Zahl.
  9. Waschmaschine nach irgendeinem der Ansprüche 1 bis 8, wobei jedes Erfassungsmittel (42) wenigstens einen piezoelektrischen Kraftwandler umfasst, der an einem jeweiligen Ende der Trommel vorgesehen ist und dafür ausgelegt ist, lineare Kräfte zu erfassen, die auf die Trommel einwirken und aus ihrer Rotation resultieren.
  10. Waschmaschine nach Anspruch 9, wobei jedes Erfassungsmittel (42) ferner wenigstens einen Beschleunigungswandler umfasst, der an einem jeweiligen Ende der Trommel vorgesehen ist und dafür ausgelegt ist, lineare Beschleunigungen zu erfassen, die auf die Trommel einwirken und aus ihrer Rotation resultieren.
  11. Waschmaschine nach irgendeinem der Ansprüche 1 bis 10, die ferner jeweilige Lager (29) umfasst, in denen Wellenmittel (19), die von jedem Ende der Trommel hervorstehen, drehbar gelagert sind, wobei ein Erfassungsmittel (42) in jedem Lager vorgesehen ist.
  12. Waschmaschine nach Anspruch 11, wobei jedes Lager einen Außenring (146) und einen Innenring (147) enthält, wobei der Innenring (147) ein Drehlager (15) hält, das ein Wellenmittel (19) der Trommel unterstützt, wobei ein Paar Lastbrücken (140, 41) die inneren und äußeren Ringe miteinander verbinden, und wobei jede Lastbrücke ein Erfassungsmittel enthält.
  13. Waschmaschine nach Anspruch 12, wobei entsprechende Paare von Lastbrücken (140, 41) direkt oberhalb und direkt unterhalb der Achse der perforierten Trommel (11) angeordnet sind.
  14. Waschmaschine nach irgendeinem der Ansprüche 1 bis 13, wobei die perforierte Trommel (11) innerhalb eines Gehäuses (12) unterstützt ist und keine Aufhängung zwischen dem Gehäuse (12) und der perforierten Trommel (11) vorgesehen ist.
EP99962598A 1998-12-23 1999-12-21 Waschmaschine mit auswuchtvorrichtung Expired - Lifetime EP1153163B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06026323A EP1764436A1 (de) 1998-12-23 1999-12-21 Waschmaschine mit Auswuchtvorrichtung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NZ33357398 1998-12-23
NZ33357398 1998-12-23
PCT/NZ1999/000223 WO2000039382A1 (en) 1998-12-23 1999-12-21 A laundry appliance with load balancing system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06026323A Division EP1764436A1 (de) 1998-12-23 1999-12-21 Waschmaschine mit Auswuchtvorrichtung

Publications (3)

Publication Number Publication Date
EP1153163A1 EP1153163A1 (de) 2001-11-14
EP1153163A4 EP1153163A4 (de) 2003-02-12
EP1153163B1 true EP1153163B1 (de) 2007-10-10

Family

ID=19927089

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99962598A Expired - Lifetime EP1153163B1 (de) 1998-12-23 1999-12-21 Waschmaschine mit auswuchtvorrichtung
EP06026323A Withdrawn EP1764436A1 (de) 1998-12-23 1999-12-21 Waschmaschine mit Auswuchtvorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06026323A Withdrawn EP1764436A1 (de) 1998-12-23 1999-12-21 Waschmaschine mit Auswuchtvorrichtung

Country Status (14)

Country Link
US (1) US6477867B1 (de)
EP (2) EP1153163B1 (de)
JP (2) JP2002533192A (de)
KR (1) KR100475890B1 (de)
CN (1) CN1318673C (de)
AT (1) ATE375413T1 (de)
AU (1) AU755599B2 (de)
BR (1) BR9916837A (de)
CA (1) CA2353814C (de)
DE (1) DE69937310T2 (de)
MY (1) MY122478A (de)
TR (1) TR200101866T2 (de)
WO (1) WO2000039382A1 (de)
ZA (1) ZA200104539B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001845A1 (de) * 2010-02-11 2011-08-11 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Einrichtung zur Überwachung einer im Betrieb schwingenden Vorrichtung eines Haushaltsgeräts, Haushaltsgerät zur Pflege von Wäschestücken sowie Verfahren zum Betreiben eines Haushaltsgeräts

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6874006B1 (en) * 1999-10-29 2005-03-29 Pentomics, Inc. Apparatus and method for rectangular-to-polar conversion
US6530100B2 (en) * 2001-06-20 2003-03-11 Maytag Corporation Appliance spin control and method adaptable to floor structure
US6532422B1 (en) * 2001-06-29 2003-03-11 Honeywell International, Inc. Simultaneous injection method and system for a self-balancing rotatable apparatus
US6622105B2 (en) * 2001-09-10 2003-09-16 Honeywell International Inc. Dynamic correlation extension for a self-balancing rotatable apparatus
US6775870B2 (en) * 2001-11-15 2004-08-17 Honeywell International Inc. Data manipulation method and system for a self-balancing rotatable apparatus
US6795792B2 (en) * 2001-11-15 2004-09-21 Honeywell International Inc. Continuous flow method and system for placement of balancing fluid on a rotating device requiring dynamic balancing
EP2302124A3 (de) 2002-12-27 2013-01-09 LG Electronics Inc. Trommelwaschmaschine
KR100464054B1 (ko) 2002-12-27 2005-01-03 엘지전자 주식회사 일체형 캐비넷/터브를 구비한 드럼 세탁기
KR100480133B1 (ko) * 2003-01-16 2005-04-07 엘지전자 주식회사 드럼 세탁기 및 그 운전제어방법
KR20050037692A (ko) * 2003-10-20 2005-04-25 삼성전자주식회사 세탁기
KR100634802B1 (ko) * 2004-07-20 2006-10-16 엘지전자 주식회사 드럼 세탁기
ES2277487B1 (es) * 2004-11-08 2008-06-16 Fagor, S. Coop. Dispositivo y metodo para el equilibrado de una lavadora.
ES2380570T3 (es) * 2005-02-25 2012-05-16 Askoll Holding S.R.L. Unidad de motor eléctrico síncrono con un dispositivo de detección de condiciones de desequilibrio
US7841220B2 (en) 2005-09-30 2010-11-30 Lg Electronics Inc. Drum-type washing machine
KR100651853B1 (ko) 2005-09-30 2006-12-01 엘지전자 주식회사 인서트사출형 베어링하우징조립체 및 이를 구비한캐비넷/터브 일체형 드럼세탁기
DE102005062470A1 (de) * 2005-12-27 2007-07-12 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung und Verfahren zum Dämpfen der Unwucht eines rotierenden Teils und Geschirrspülmaschine mit einer derartigen Vorrichtung
US7536882B2 (en) 2006-03-29 2009-05-26 Lg Electronics Inc. Drum type washing machine
US7581272B2 (en) * 2006-05-19 2009-09-01 Whirlpool Corporation Dynamic load detection for a clothes washer
US7739765B2 (en) * 2006-11-09 2010-06-22 Whirlpool Corporation Tangling detection for an automatic washer
NZ552422A (en) * 2006-12-21 2009-09-25 Fisher & Paykel Appliances Ltd Laundry appliance including control means which energises a motor to evenly distribute a load in response to signals from load sensors
WO2009028963A2 (en) * 2007-08-30 2009-03-05 Fisher & Paykel Appliances Limited Variable pressure water delivery system
JP5515203B2 (ja) * 2007-09-04 2014-06-11 パナソニック株式会社 洗濯機、ドラム回転速度制御方法およびプログラム
EP2169102B1 (de) * 2007-09-04 2014-12-31 Panasonic Corporation Waschmaschine sowie verfahren und programm zur steuerung der trommeldrehzahl
JP4983544B2 (ja) * 2007-10-30 2012-07-25 パナソニック株式会社 洗濯機、ドラム回転速度制御方法およびプログラム
ES2333760B1 (es) * 2007-09-17 2011-01-31 Bsh Electrodomesticos España, S.A. Lavadora con un deposito de lavado y un peso equilibrador fijado al mismo y procedimiento para la fijacion del peso equilibrador al deposito de lavado.
JP4577373B2 (ja) * 2008-02-18 2010-11-10 パナソニック株式会社 ドラム式洗濯機
US8695381B2 (en) * 2008-03-28 2014-04-15 Electrolux Home Products, Inc. Laundering device vibration control
US20090249560A1 (en) * 2008-04-04 2009-10-08 Ken Gaulter Laundry water extractor speed limit control and method
JP4737242B2 (ja) * 2008-07-10 2011-07-27 パナソニック株式会社 ドラム式洗濯乾燥機
JP4835656B2 (ja) * 2008-07-10 2011-12-14 パナソニック株式会社 ドラム式洗濯乾燥機
KR101520665B1 (ko) * 2008-07-14 2015-05-15 엘지전자 주식회사 의류처리장치의 운전 제어방법
JP5446489B2 (ja) * 2008-09-02 2014-03-19 パナソニック株式会社 洗濯機
AU2009327647B2 (en) * 2008-12-17 2012-07-19 Fisher & Paykel Appliances Limited A laundry machine
EP2206823B1 (de) 2008-12-17 2014-10-29 Fisher & Paykel Appliances Limited Waschmaschine mit einem Gleichgewicht Verbesserungssystem
DE102008055091A1 (de) * 2008-12-22 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Steuern eines Wäscheverteilbetriebs eines Haushaltsgeräts zur Pflege von Wäschestücken
DE102010002048A1 (de) * 2010-02-17 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Verfahren zur Einstellung einer Schleuderdrehzahl einer Trommel eines Hausgeräts zur Pflege von Wäschestücken
BR112016006497B1 (pt) * 2013-09-25 2020-12-22 Bühler AG dispositivo para tratamento e/ou processamento de material a granel
DE102015100747A1 (de) * 2015-01-20 2016-07-21 Miele & Cie. Kg Verfahren zum Betreiben einer Waschmaschine und Waschmaschine
CN110672347A (zh) * 2019-10-16 2020-01-10 宁夏科先安全检验检测科技有限公司 一种对大型起重机进行载荷试验试重的替代方法
TWI717286B (zh) * 2020-06-02 2021-01-21 台灣松下電器股份有限公司 自動修正洗衣槽偏載的方法及執行該方法的洗衣機
CN113981654B (zh) * 2020-07-27 2024-03-26 天津海尔洗涤电器有限公司 洗衣机控制方法、装置、洗衣机和存储介质

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534267A (en) 1945-10-03 1950-12-19 Leo M Kahn Washing machine cylinder balancing apparatus
US2647386A (en) * 1948-04-03 1953-08-04 Easy Washing Machine Corp Washing machine
US2534269A (en) 1948-05-26 1950-12-19 Kahn Automatic balancing system for cleaning machine cylinders
GB711531A (en) * 1949-04-20 1954-07-07 Leo Marcus Kahn Balancing arrangement, particularly for hydro extractors
US2610523A (en) * 1950-12-16 1952-09-16 Leo M Kahn Automatic balancing system for rotatable article handling machines
US3214946A (en) * 1958-11-28 1965-11-02 Pellerin Corp Milnor Drain baffle for self-balancing washing machines
US3117926A (en) * 1958-11-28 1964-01-14 Pellerin Corp Milnor Automatic imbalance control system for a clothes washing machine
US3119773A (en) * 1960-10-10 1964-01-28 Whirlpool Co Pivoting deflector water balance system for centrifugal extractor apparatus
US3235082A (en) * 1962-04-23 1966-02-15 Whirlpool Co Laundry machine and method
US3983035A (en) * 1971-06-24 1976-09-28 U.S. Philips Corporation Balancing device for a rotatable drum which may be eccentrically loaded
NL7112526A (de) * 1971-09-11 1973-03-13
GB1598399A (en) 1977-06-02 1981-09-16 Hitachi Ltd Drum type automatic electric washing machine
CH622346A5 (de) * 1977-09-29 1981-03-31 Kistler Instrumente Ag
US4295387A (en) * 1979-07-12 1981-10-20 Zhivotov Jury G Apparatus for balancing bodies of revolution
NZ213490A (en) 1985-09-16 1990-03-27 Fisher & Paykel Cyclic motor reversal by forced commutation
US4905419A (en) * 1987-03-19 1990-03-06 Makarov Oleg A Device for automatic balancing of grinding wheel
SE461279B (sv) * 1988-05-30 1990-01-29 Electrolux Ab Metod foer balansering av en kring en vaesentligen horisontell axel roterande behaallare
JPH0243985U (de) * 1988-09-14 1990-03-27
JPH0431901A (ja) * 1990-05-29 1992-02-04 Toshiba Corp むだ時間を含む系の制御装置
JP3205000B2 (ja) * 1991-03-26 2001-09-04 株式会社日立製作所 ドラム式洗濯乾燥機
JP2697970B2 (ja) * 1991-06-19 1998-01-19 新日本製鐵株式会社 制御装置
US5280660A (en) * 1992-10-05 1994-01-25 Pellerin Milnor Corporation Centrifugal extracting machine having balancing system
US5345792A (en) * 1992-12-28 1994-09-13 Whirlpool Corporation Balancer for an automatic washer
JPH06246092A (ja) * 1993-02-24 1994-09-06 Mitsubishi Heavy Ind Ltd ドラム式洗濯機
US5561993A (en) * 1995-06-14 1996-10-08 Honeywell Inc. Self balancing rotatable apparatus
US5582040A (en) * 1995-08-09 1996-12-10 Khan; Aman U. Water balancing apparatus for horizontal axis and vertical axis laundry appliances
JP3332769B2 (ja) * 1996-02-27 2002-10-07 三洋電機株式会社 遠心脱液装置
FR2754866B1 (fr) * 1996-10-21 1999-01-29 Abb Solyvent Ventec Dispositif d'equilibrage dynamique et ponderal pour machines a rotors, en particulier pour ventilateurs industriels
JPH10146491A (ja) * 1996-11-20 1998-06-02 Sanyo Electric Co Ltd ドラム式洗濯機
US5893280A (en) * 1996-12-18 1999-04-13 Sanyo Electric Co., Ltd. Spin extractor
ES2151332B1 (es) 1997-01-31 2001-06-16 Fagor S Coop Metodo de equilibrado de una lavadora de ropa.
US5930855A (en) * 1997-12-23 1999-08-03 Maytag Corporation Accelerometer for optimizing speed of clothes washer
PT1088126E (pt) 1998-04-14 2005-04-29 Tulga Simsek Uma maquina e um metodo para o equilibrio de uma tal maquina

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001845A1 (de) * 2010-02-11 2011-08-11 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Einrichtung zur Überwachung einer im Betrieb schwingenden Vorrichtung eines Haushaltsgeräts, Haushaltsgerät zur Pflege von Wäschestücken sowie Verfahren zum Betreiben eines Haushaltsgeräts

Also Published As

Publication number Publication date
CA2353814C (en) 2007-04-17
MY122478A (en) 2006-04-29
ZA200104539B (en) 2003-03-06
CN1318673C (zh) 2007-05-30
CN1342231A (zh) 2002-03-27
WO2000039382A1 (en) 2000-07-06
BR9916837A (pt) 2001-09-25
EP1153163A1 (de) 2001-11-14
DE69937310T2 (de) 2008-07-10
DE69937310D1 (de) 2007-11-22
EP1153163A4 (de) 2003-02-12
KR20010108039A (ko) 2001-12-07
AU1900500A (en) 2000-07-31
KR100475890B1 (ko) 2005-03-10
JP2006320762A (ja) 2006-11-30
EP1764436A1 (de) 2007-03-21
US6477867B1 (en) 2002-11-12
TR200101866T2 (tr) 2001-12-21
JP2002533192A (ja) 2002-10-08
CA2353814A1 (en) 2000-07-06
ATE375413T1 (de) 2007-10-15
AU755599B2 (en) 2002-12-19

Similar Documents

Publication Publication Date Title
EP1153163B1 (de) Waschmaschine mit auswuchtvorrichtung
AU2007334750B2 (en) Improved laundry appliance
US8930031B2 (en) Laundry machine
AU755693B2 (en) Method and apparatus for detecting washing machine tub imbalance
US6826932B2 (en) Drum-type washing machine
WO2004097099A1 (en) Method and system for determining a washing machine load unbalance
CN101397738B (zh) 洗衣机及转动滚筒控制电气设备
EP2206823B1 (de) Waschmaschine mit einem Gleichgewicht Verbesserungssystem
MXPA01006275A (es) Aparato de lavanderia con sistema de compensacion de carga
CN113930939B (zh) 衣物处理设备的负载偏心检测方法、装置和衣物处理设备
US11674251B2 (en) Control method of laundry treating apparatus
WO2023084400A1 (en) Out of balance method and apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010606

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

A4 Supplementary search report drawn up and despatched

Effective date: 20030103

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FISHER & PAYKEL APPLIANCES LIMITED

17Q First examination report despatched

Effective date: 20050419

17Q First examination report despatched

Effective date: 20050419

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

RIN2 Information on inventor provided after grant (corrected)

Inventor name: RHODES, DAVID CHARLES

Inventor name: COLLECUTT, GREGORY RAYMOND

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69937310

Country of ref document: DE

Date of ref document: 20071122

Kind code of ref document: P

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080110

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080121

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080310

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071231

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080312

Year of fee payment: 9

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

26N No opposition filed

Effective date: 20080711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20081222

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081210

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20071010

REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1038046

Country of ref document: HK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071221

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20091230

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20091221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091221

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69937310

Country of ref document: DE

Effective date: 20110701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110701